Environmentally friendly as well as sleek and stylish. It's 18 inches tall! The solar panel converts sunlight into energy and charges the AA Ni-MH rechargeable battery during the day. When the battery is fully charged the light will remain lit for up to 8-12 hours. The 18" high solar light includes stake mount hardware and automatically turns on and off at dawn and dusk. The Solar Stake Light is a snazzy way to add a little bit of light without the hassle and mess of wires. Voltage 1.2. Requires 3 Ni-Mh 1200 mAh AA. Solar Panel: Pollycrystalline